Eyebright is an excellent remedy for the problems of mucous membranes. The combination of anti-inflamatory and astringent properties make it relevant in many conditions. Used internally it is a powerful anti-catarrhal and thus may be used in nasal catarrh, sinusitis and other congestive states. It is best known for its use in conditions of the eye, where it is helpful in acute or chronic inflammations, stinging and weeping eyes as well as over-sensitivity to light. Used as a compress and taken internally it is used in conjuctivitis and blepharitis. The New Holistic Herbal by David Hoffmann Pg. 199